Several of his top aides have opposed the action, too, as has his daughter and adviser, Ivanka Trump.
He was to meet later Wednesday with Secretary of State Rex Tillerson, who has favoured remaining in the agreement.
Some northern European countries are criticizing the US for its expected withdrawal from the Paris climate accords. Speaking to reporters on Thursday, a spokesman for President Vladimir Putin said Russian Federation "thinks highly" of the accords and sees no alternative to it. Spokesman Dmitry Peskov added that its implementation will not be as effective "without the key signatories".
Donald Trump has, very wrongly, called climate change "a hoax invented by the Chinese".
It very likely will take place in Canada, around the same time as the United Nations General Assembly, which starts in New York City on September 12.
Trump, however, argued the agreement had disadvantaged the U.S. Even fossil fuel companies such as Exxon Mobil, BP and Shell say the United States should abide by the deal.
Cohn, the Trump economic adviser, also said last week that the president's views were "evolving".
She's criticizing what she says are "destructive and short-sighted" decisions by the Trump administration.
"They're going to make their own decision, but we all need to be moving forward".
More than 190 nations agreed to the accord in December 2015 in Paris, and 147 have since formally ratified or otherwise joined it, including the U.S. - representing more than 80 per cent of the world's greenhouse gas emissions. Withdrawing would leave the United States aligned only with Russian Federation among the world's industrialized economies.
The official told reporters that the European Union and China will also "spell out" how they plan to meet their commitments to the landmark worldwide accord to fight global warming at talks in Brussels on Friday.
The official is involved in preparing the meeting between top EU Council President Donald Tusk, Commission President Jean-Claude Juncker and Chinese Premier Li Keqiang but can not speak on the record because their meeting statement was not finalized.
"Our climate action strategy represents an opportunity to attract investment, innovation and develop new green technologies", he said. In his first major speech on climate change since assuming charge as the head of the United Nations this January, Guterres bluntly warned the worldwide community that the "world is in a mess" and the impact of climate change could affect food production, water security and weather patterns "from Canada to India".
Axios quoted two sources with direct knowledge of the issue that the president has already made a decision to withdraw from the climate change pact reached in December 2015 by 195 countries.
But House Democratic leader Nancy Pelosi of California called it "a stunning abdication of American leadership and a grave threat to our planet's future".
Trump's chief economic adviser, Gary Cohn, has discussed the possibility of changing the US carbon reduction targets instead of pulling out of the deal completely.
A decision due from the president this week on whether to pull the US out of the deal involving nearly 200 nations could have a domino effect on the participation of other countries in limiting fossil-fuel pollution, making it nearly impossible and extremely expensive to stop catastrophic climate change.
Scientists say Earth is likely to reach more unsafe levels of warming sooner if the USA retreats from its pledge because America contributes so much to rising temperatures. Instead, it's catalyzed support for the deal.
A day earlier, Trump on return from his maiden overseas trip met with Pruitt. Like his boss, Pruitt has questioned the consensus of climate scientists that the Earth is warming and that man-made climate emissions are to blame. He has spent his first months in office working to delay and roll back federal regulations limiting greenhouse gas emissions while pledging to revive long-struggling USA coal mines. Axios news outlet, which first reported the withdrawal, says that this is now being managed by a team which includes Scott Pruitt - the leader of the EPA who believes climate change is not real, wants to replace scientists with industry reps, and thinks Carbon dioxide and global warming have nothing in common.